package com.cg.controller;

import ch.qos.logback.core.util.StringUtil;
import com.cg.pojo.Result;
import com.cg.pojo.User;
import com.cg.service.UserService;
import com.cg.utils.JwtUtil;
import com.cg.utils.Md5Util;
import com.cg.utils.ThreadLocalUtil;
import jakarta.validation.constraints.Pattern;
import org.hibernate.validator.constraints.URL;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.redis.core.StringRedisTemplate;
import org.springframework.data.redis.core.ValueOperations;
import org.springframework.util.StringUtils;
import org.springframework.validation.annotation.Validated;
import org.springframework.web.bind.annotation.*;

import java.util.HashMap;
import java.util.Map;
import java.util.concurrent.TimeUnit;

@RestController
@RequestMapping("/user")
@Validated
public class UserController {
    @Autowired
    private UserService userService;
    @Autowired
    private StringRedisTemplate stringRedisTemplate;

    //注册
    @PostMapping("/register")
    public Result register(@Pattern(regexp = "^\\S{5,16}$")String username,@Pattern(regexp = "^\\S{5,16}$") String password){

        //if(username!=null&&username.length()>=5&&username.length()<=16&&password!=null&&password.length()>=5&&password.length()<=16){
            //查询用户
            User u =  userService.findByUserName(username);
            if(u==null){
                //没有占用
                //注册
                userService.register(username,password);
                return Result.success();
            }else{
                //占用
                return Result.error("用户名已被占用!");
            }
       // }else{
       //     return Result.error("参数不合法(密码和用户名长度大于等于5小于16)");
       // }


    }
    //登录

    @PostMapping("/login")
    public Result<String> login(@Pattern(regexp = "^\\S{5,16}$")String username,@Pattern(regexp = "^\\S{5,16}$") String password){
        //根据用户名查询用户

       User loginUser =  userService.findByUserName(username);
        //判断用户是否存在
        if(loginUser==null){
            return Result.error("用户名错误");
        }
        //判断密码是否正确
        if(Md5Util.getMD5String(password).equals(loginUser.getPassword())){
            //登录成功
            Map<String,Object> claims = new HashMap<>();
            claims.put("id",loginUser.getId());
            claims.put("username",loginUser.getUsername());
            String token = JwtUtil.genToken(claims);
            //token存储到redis中
            ValueOperations<String, String> operations = stringRedisTemplate.opsForValue();
            operations.set(token, token,12, TimeUnit.HOURS);
            return Result.success(token);
        }

            return Result.error("密码错误");


    }
    //个人信息
    @GetMapping("/userInfo")
    public Result<User> userInfo(/*@RequestHeader(name="Authorization")String token*/){
        //根据用户名查询用户
//       Map<String,Object>map = JwtUtil.parseToken(token);
//       String username =(String)map.get("username");
        Map<String,Object>map=ThreadLocalUtil.get();
        String username = (String)map.get("username");
       User user = userService.findByUserName(username);
       return Result.success(user);
    }

//更新个人信息
    @PutMapping("/update")
    public Result update(@RequestBody @Validated User user){
        userService.update(user);
        return Result.success();
    }
    //更新头像
    @PatchMapping("/updateAvatar")
    public Result updateAvatar(@RequestParam  @URL String avatarUrl){
        userService.updateAvatar(avatarUrl);
        return Result.success();
    }
    //更新密码
    @PatchMapping("/updatePwd")
    public Result updatePwd(@RequestBody Map<String,String> params,@RequestHeader("Authorization") String token){
        //1.校验参数

       String oldPwd= params.get("old_pwd");
       String newPwd = params.get("new_pwd");
       String rePwd =params.get("re_pwd");

       if(!StringUtils.hasLength(oldPwd)||!StringUtils.hasLength(newPwd)||!StringUtils.hasLength(rePwd)){
           return Result.error("缺少必要的参数");
       }
       //调用UserService根据用户名拿到密码，再和old_pwd比对
        Map<String,Object>map=ThreadLocalUtil.get();
       String username =(String)map.get("username");
        User LoginUser =userService.findByUserName(username);
       if(!LoginUser.getPassword().equals(Md5Util.getMD5String(oldPwd))){
           return Result.error("原密码不正确");
       }

       if(!rePwd.equals(newPwd)){
           return Result.error("两次填写的新密码不一样");
       }
        //2.调用Service实现密码更新
        userService.updatePwd(newPwd);
       //删除redis中对应的token
        ValueOperations<String, String> operations = stringRedisTemplate.opsForValue();
        operations.getOperations().delete(token);
        
        return Result.success();
    }
}
